Finding the Fourth Proportional to 3,680.30, 5,077.52 and 2,086.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,680.30 : 5,077.52 = 2,086.71 : x
2. Step 2: Convert to fraction form
   3,680.30/5,077.52 = 2,086.71/x
3. Step 3: Cross multiply
   3,680.30x = 5,077.52 × 2,086.71
4. Step 4: Simplify right side
   3,680.30x = 10,595,301.33
5. Step 5: Solve for x
   x = 10,595,301.33/3,680.30
6. Step 6: Final answer
   x = 2,878.93